This is The Story Project, a story that is constantly expanded by the readers themselves by using the app.
Once a dead end is reached the user will be presented with a choice to either continue the story or to go back and read another story line.
This is one of the story lines.

You manage to open the window without much noise, and slowly climb out. You're on the second floor, and are now standing on a tiny ledge that seems to go all the way around the house. The drop down can't be any more than two meters high, although you're still a bit drowsy with reduced perception. Back in the room you can hear someone knocking at the door again.